Solar power

Definition

Solar power is the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power. It harnesses the potential energy of photons from the sun to generate electrical energy.

5 Must Know Facts For Your Next Test

1. Photovoltaic cells convert sunlight directly into electricity by utilizing the photoelectric effect.
2. Concentrated solar power systems use mirrors or lenses to focus a large area of sunlight onto a small area, typically to produce steam that drives a turbine connected to an electric generator.
3. The efficiency of solar panels is influenced by factors such as temperature, angle of incidence, and the quality of the photovoltaic material.
4. Solar power is considered a renewable source of energy because it relies on sunlight, which is abundant and sustainable.
5. Energy storage systems, like batteries, are often used in conjunction with solar power to store excess energy produced during peak sunlight hours for use when sunlight is not available.

Review Questions

• What physical principle do photovoltaic cells utilize to convert sunlight into electricity?
• How does concentrated solar power generate electricity differently from photovoltaic systems?
• What factors can affect the efficiency of solar panels?

Related terms

Photovoltaic Effect: The creation of voltage or electric current in a material upon exposure to light.

Renewable Energy: Energy from sources that are naturally replenishing but flow-limited; they are virtually inexhaustible in duration but limited in the amount of energy available per unit of time.

Energy Storage: Technologies or methods used to store surplus energy for later use, typically through batteries or other mediums.